Upholstered sofa



FIG. 1 is a front perspective view of an upholstered sofa embodying my design;

FIG. 2 is a top plan view; and

FIG. 3 is a right side view of FIG. 2.

The side of the sofa not shown is a mirror image of the side shown while the rear is conventional in appearance. 

The ornamental design for an upholstered sofa, as shown and described. 